EP3020600B1 - Fahrzeugsitz - Google Patents

Fahrzeugsitz Download PDF

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Publication number
EP3020600B1
EP3020600B1 EP15193851.1A EP15193851A EP3020600B1 EP 3020600 B1 EP3020600 B1 EP 3020600B1 EP 15193851 A EP15193851 A EP 15193851A EP 3020600 B1 EP3020600 B1 EP 3020600B1
Authority
EP
European Patent Office
Prior art keywords
seat
width direction
seatback
sections
main section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP15193851.1A
Other languages
English (en)
French (fr)
Other versions
EP3020600B8 (de
EP3020600A1 (de
Inventor
Gen Takahashi
Hiroki Hori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of EP3020600A1 publication Critical patent/EP3020600A1/de
Application granted granted Critical
Publication of EP3020600B1 publication Critical patent/EP3020600B1/de
Publication of EP3020600B8 publication Critical patent/EP3020600B8/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/70—Upholstery springs ; Upholstery
    • B60N2/72—Attachment or adjustment thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/64—Back-rests or cushions
    • B60N2/643—Back-rests or cushions shape of the back-rests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/90—Details or parts not otherwise provided for
    • B60N2/986—Side-rests

Definitions

  • the present invention relates to a vehicle seat.
  • JP-A Japanese Patent Application Laid-Open ( JP-A) No. 2013-244239 describes a vehicle seat configured to lessen a pressing sensation on the region of both scapulae of a seated occupant, and to fit a seat face to a region of the back between the scapulae while accommodating differences in physical build and seating posture between seated occupants.
  • the vehicle seat described in this document includes a first slab pad formed using a softer material than that of a seatback pad (molded pad), provided at a seat width direction intermediate portion of a front face of the seatback pad.
  • second slab pads formed using a softer material than that of the seatback pad are provided on both seat width direction side portions of the first slab pad (at portions supporting both scapulae).
  • the first slab pad projects out further to the seat front side than the second slab pads, thereby enabling a pressing sensation on both scapulae of the seated occupant to be lessened, and enabling the seat face to fit to the region of the back between the scapulae while accommodating differences in physical build and seating posture between seated occupants.
  • JP-A No.2005-329090 discloses a vehicle seat comprising a seatback pad including a pair of left and right side support sections, a main section disposed between the pair of left and right side support sections, and soft sections disposed on the pair of left and right side support sections.
  • EP 2623367 A1 discloses a vehicle seat comprising a seatback, wherein a friction coefficient of a backrest portion is modified to reduce muscle burden of a occupant.
  • US 2013/313885 A1 discloses a vehicle seat comprising a seatback pad including a pair of left and right side support sections, a main section disposed between the pair of left and right side support sections and soft angled sections that are provided at seat front side end portions at both seat width direction end portions of the main section and that are softer than a seat width direction intermediate end portion.
  • an object of the present invention is to obtain a vehicle seat capable of improving holding properties with respect to a seated occupant leaning in the seat width direction when lateral G force arises.
  • a vehicle seat includes: a seatback frame that forms a framework of a seatback that supports the back of a seated occupant; and a seatback pad that is attached to the seatback frame, and that includes a pair of left and right side support sections respectively disposed at both seat width direction end portions of the seatback pad, a main section disposed between the pair of left and right side support sections, and soft angled sections that are provided at seat front side end portions at both seat width direction end portions of the main section, that are softer than a seat width direction intermediate portion of the main section, and that are angled such that seat front side faces of the soft angled sections are disposed further toward the seat front side on progression toward the seat width direction outer side.
  • the seatback pad includes a seatback pad body formed by injecting a foamable resin material such as polyurethane resin into a specific mold and foaming inside the mold, and said soft angled sections that are formed from polyurethane foam slabs and joined to the seatback pad body, and the soft angled sections are formed using a softer material than that of the seatback pad body, and the soft angled sections are formed with substantially triangular cross-sections in plan view cross-section.
  • a foamable resin material such as polyurethane resin
  • the side support sections, the main section, and the soft angled sections of the seatback pad deform.
  • the seat front side faces of the soft angled sections namely the faces of the soft angled sections on the side of the seated occupant, are angled toward the seat front side on progression toward the seat width direction outer side. Accordingly, when the soft angled sections deform so as to stretch out toward the seat width direction outer side due to the seated occupant leaning toward the seat width direction outer side, tension rapidly arises in the occupant side faces of the soft angled sections (the occupant side faces on the soft angled sections are rapidly pulled taut). This thereby enables the seated occupant to rapidly obtain a reaction force from the soft angled sections, thus enabling improved holding properties with respect to the seated occupant leaning in the seat width direction when lateral G force arises.
  • a vehicle seat according to a second aspect of the present invention is the vehicle seat of the first aspect, wherein: the seatback pad is covered with a covering material; and the coefficient of friction of a surface of the covering material at a location covering the soft angled section is set higher than the coefficient of friction of a surface of the covering material at a location covering the seat width direction intermediate portion of the main section.
  • setting the coefficient of friction of the covering material as described above enables a further improvement in the holding properties with respect to the seated occupant leaning in the seat width direction when lateral G force arises.
  • a vehicle seat according to a third aspect of the present invention is the vehicle seat of either the first aspect or the second aspect, wherein: the seatback pad is formed with first recessed grooves opening toward the seat front side between the side support sections and the main section, and is formed with second recessed grooves opening toward the seat front side on both seat width direction sides of the main section and further to the seat width direction inner side than the first recessed grooves; and the soft angled sections are joined to seat front side end faces of the main section at locations between the first recessed grooves and the second recessed grooves.
  • the seat front side end faces of the main section at locations between the first recessed grooves and the second recessed grooves configure joint faces of the soft angled sections, thereby enabling easy positioning of the soft angled sections in the seat width direction.
  • the vehicle seat according to the present invention exhibits the excellent advantageous effect of enabling an improvement in the holding properties with respect to the seated occupant leaning in the seat width direction when lateral G force arises.
  • a vehicle seat according to an exemplary embodiment of the present invention, with reference to Fig. 1 to Fig. 3 .
  • reference to the front-rear, left-right, and up-down directions indicates the front-rear, left-right, and up-down directions from the perspective of an occupant sitting in the vehicle seat.
  • the arrow FR indicates the front direction
  • the arrow UP indicates the upward direction
  • the arrow RH indicates the right direction
  • the arrow LH indicates the left direction as appropriate.
  • the arrow RH and the arrow LH correspond to the seat width direction.
  • a vehicle seat 10 of the present exemplary embodiment is employed as a driving seat or a front passenger seat.
  • the vehicle seat 10 includes a seat cushion 12 that supports the buttocks and thighs of an occupant P, a seatback 14 that supports the back of the occupant P, and a headrest 16 that supports the head of the occupant P.
  • the seatback 14 is reclinably attached to a rear end portion of the seat cushion 12, and as illustrated in Fig. 1 , the seatback 14 is configured by attaching a seatback pad 20 covered with a covering material 18 to a seatback frame 22.
  • the seatback frame 22 that configures framework of the seatback 14 includes a pair of side frames 24 extending in the seat up-down direction at seat width direction right side and left side end portions inside the seatback 14, and an upper frame, not illustrated in the drawings, connecting together upper ends of the pair of side frames 24 along the seat width direction.
  • the side frames 24 are substantially formed with U-shaped cross-sections opening toward the seat width direction inner side in plan view of the seat.
  • a seatback spring 26 spans between the left and right side frames 24.
  • the seatback pad 20 includes a seatback pad body 28 formed by injecting a foamable resin material such as polyurethane resin into a specific mold and foaming inside the mold, and soft angled sections 30 that are formed from polyurethane foam slabs and joined to the seatback pad body 28.
  • a foamable resin material such as polyurethane resin
  • the seatback pad body 28 includes a pair of left and right side support sections 32 respectively disposed at both seat width direction end portions of the seatback pad body 28, and a main section 34 disposed between the pair of left and right side support sections 32.
  • the side support sections 32 are formed projecting out toward the seat front side with respect to the main section 34, thus suppressing seat width direction movement of the occupant P sitting in the vehicle seat 10.
  • first recessed grooves 36 opening toward the seat front side are formed at boundaries between the side support sections 32 and the main section 34.
  • second recessed grooves 38 opening toward the seat front side are formed on both seat width direction sides of the main section 34, further to the seat width direction inner side than the first recessed grooves 36.
  • Seat front side end faces of the main section 34 at locations between the respective first recessed grooves 36 and second recessed grooves 38 configure soft angled section joint faces 34A, to which the soft angled sections 30, described later, are joined.
  • the soft angled sections 30 are formed using a softer material than that of the seatback pad body 28, and the soft angled sections 30 are formed with substantially triangular cross-sections in plan view cross-section.
  • Seat rear side end faces of the soft angled sections 30 configure joint faces 30A that are joined to the soft angled section joint faces 34A of the seatback pad body 28 using an adhesive or the like.
  • seat front side end faces of the soft angled sections 30, namely end faces on the occupant P side of the soft angled sections 30, configure angled faces 30B that are angled toward the seat front side on progression toward the seat width direction outer side.
  • the soft angled sections 30 In a joined state of the soft angled sections 30 to the seatback pad body 28, the soft angled sections 30 project out further toward the seat front side than a seat width direction intermediate portion 34B of the main section 34.
  • the soft angled sections 30 are disposed at positions facing the scapulae of the occupant P sitting in the vehicle seat 10 along the seat front-rear direction.
  • the seat width direction positions of the soft angled sections 30 are set in consideration of the positions of the scapulae of occupants P with physical builds corresponding to an AM50 dummy and a JF05 dummy, in a seated state with standard posture in the vehicle seat 10 that is set in a standard usage state.
  • the occupant P labelled PI is an occupant with a physical build corresponding to an AM50 dummy
  • the occupant P labelled P2 is an occupant with a physical build corresponding to a JF05 dummy.
  • the covering material 18 covering the seatback pad 20 described above is made from fabric or leather, and the covering material 18 of the present exemplary embodiment is formed by appropriately stitching together a main section cover 40 that covers a seat width direction intermediate portion of the main section 34, side support section covers 42 that cover the side support sections 32, and soft angled section covers 44 that cover the soft angled sections 30. Specifically, seat width direction inner side end portions of the side support section covers 42 are stitched together with seat width direction outer side end portions of the soft angled section covers 44.
  • One end of a coupling member (suspension cloth) 46 is stitched to each such stitching location A1, and the other end of the coupling member 46 is coupled using hog rings 50 to an insert wire 48 formed by insert molding to the seatback pad body 28 at a closed end portion of each of the first recessed grooves 36.
  • Seat width direction outer side end portions of the main section cover 40 are stitched to seat width direction inner side end portions of the soft angled section covers 44.
  • One end of a coupling member 52 is stitched to each such stitching location A2, and the other end of the coupling member 52 is coupled using hog rings 56 to an insert wire 54 formed by insert molding to the seatback pad body 28 at a closed end portion of each of the second recessed grooves 38.
  • the coefficient of friction of the surfaces (faces on the occupant P side) of the soft angled section covers 44 is set higher than the coefficient of friction of the surface (face on the occupant P side) of the main section cover 40.
  • the coefficients of friction can be set as described above by making the main section cover 40 out of leather, and making the soft angled section covers 44 out of fabric.
  • the coefficients of friction can also be set as described above by applying a surface finish employing a resin, rubber, or the like with a high coefficient of friction to the surfaces (faces on the occupant P side) of the soft angled section covers 44.
  • the side support sections 32, the main section 34, and the soft angled sections 30 of the seatback pad 20 deform so as to conform to the shape of the occupant P illustrated in Fig. 1 and Fig. 3 .
  • the seat front side faces of the soft angled sections 30, namely the faces of the soft angled sections 30 on the side of the seated occupant P configure the angled faces 30B that are angled toward the seat front side on progression toward the seat width direction outer side. Accordingly, when the soft angled sections 30 deform so as to stretch out toward the seat width direction outer side due to the seated occupant P leaning toward the seat width direction outer side, tension rapidly arises in the angled faces 30B of the soft angled sections 30 (the angled faces 30B of the soft angled sections 30 are rapidly pulled taut). This thereby enables the seated occupant P to rapidly obtain a reaction force from the soft angled sections 30, thus enabling improved holding properties with respect to the seated occupant P leaning in the seat width direction.
  • the coefficient of friction of the occupant P side faces of the soft angled section covers 44 is set higher than the coefficient of friction of the occupant P side face of the main section cover 40, thereby enabling a further improvement to the holding properties with respect to the seated occupant P leaning in the seat width direction.
  • the seat front side end faces of the main section 34 of the seatback pad body 28 at locations between the first recessed grooves 36 and the second recessed grooves 38 configure the soft angled section joint faces 34A to which the soft angled sections 30 are joined, thereby enabling easy positioning of the soft angled sections 30 in the seat width direction.
  • an integral seatback pad including soft angled sections configured softer than the seat width direction intermediate portion 34B of the main section 34 may be formed by setting the density of locations corresponding to the soft angled sections 30 lower than the density of the seat width direction intermediate portion 34B of the main section 34.
  • the hardness of these locations may also be set softer than the seat width direction intermediate portion 34B of the main section 34 by, for example, the addition of grooves or the like at locations corresponding to the soft angled sections 30.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Claims (3)

  1. Fahrzeugsitz (10), der aufweist:
    einen Rückenlehnenrahmen (22), der ein Rahmenelement einer Rückenlehne (14) bildet, die den Rücken eines sitzenden Insassen (P) stützt; und
    ein Rückenlehnenpolster (20), das am Rückenlehnenrahmen (22) befestigt ist und aufweist:
    ein Links/Rechts-Paar Seitenstützabschnitte (32), die an beiden Sitzbreitenrichtungsendabschnitten des Rückenlehnenpolsters (20) angeordnet sind,
    einen Hauptabschnitt (34), der zwischen dem Links/Rechts-Paar Seitenstützabschnitte (32) angeordnet ist, und
    weiche Winkelabschnitte (30), die an Sitzvorderseitenendabschnitten an beiden Sitzbreitenrichtungsendabschnitten des Hauptabschnitts (34) vorgesehen sind, die weicher sind als ein Sitzbreitenrichtungsmittelabschnitt (34B) des Hauptabschnitts (34), und die so abgewinkelt sind, dass Sitzvorderseitenflächen der weichen Winkelabschnitte (30) in Richtung der Sitzbreitenrichtungsaußenseite weiter in Richtung der Sitzvorderseite angeordnet sind, wobei
    das Rückenlehnenpolster (20) einen Rückenlehnenpolsterkörper (28), der durch Einspritzen eines schäumbaren Harzmaterials wie Polyurethanharz in eine bestimmte Form und Schäumen in der Form ausgebildet ist, und die weichen Winkelabschnitte (30) aufweist, die aus Polyurethanschaumplatten gebildet und mit dem Rückenlehnenpolsterkörper (28) verbunden sind, und
    die weichen Winkelabschnitte (30) unter Verwendung eines weicheren Materials als das des Rückenlehnenpolsterkörpers (28) ausgebildet sind, und die weichen Winkelabschnitte (30) in einer Draufsichtquerschnittsansicht mit im Wesentlichen dreieckigem Querschnitt ausgebildet sind.
  2. Fahrzeugsitz (10) nach Anspruch 1, wobei:
    das Rückenlehnenpolster (20) mit einem Bezugsmaterial (18) bezogen ist; und
    der Reibungskoeffizient einer Oberfläche des Bezugsmaterials (18) an einer Stelle, an der der weiche Winkelabschnitt (30) bezogen ist, höher festgelegt ist als der Reibungskoeffizient einer Oberfläche des Bezugsmaterials (18) an einer Stelle, an der der Sitzbreitenrichtungsmittelabschnitt (34B) des Hauptabschnitts (34) bezogen ist.
  3. Fahrzeugsitz (10) nach Anspruch 1 oder 2, wobei:
    das Rückenlehnenpolster (20) zwischen den Seitenstützabschnitten (32) und dem Hauptabschnitt (34) mit ersten ausgesparten Nuten (36), die in Richtung der Sitzvorderseite geöffnet sind, und auf beiden Sitzbreitenrichtungsseiten des Hauptabschnitts (34) und weiter zur Sitzbreitenrichtungsinnenseite als die ersten ausgesparten Nuten (36) mit zweiten ausgesparten Nuten (38) ausgebildet ist, die in Richtung der Sitzvorderseite geöffnet sind; und
    die weichen Winkelabschnitte (30) an Stellen zwischen den ersten ausgesparten Nuten (36) und den zweiten ausgesparten Nuten (38) mit den Sitzvorderseitenendflächen des Hauptabschnitts (34) verbunden sind.
EP15193851.1A 2014-11-13 2015-11-10 Fahrzeugsitz Not-in-force EP3020600B8 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014230648A JP6098616B2 (ja) 2014-11-13 2014-11-13 車両用シート

Publications (3)

Publication Number Publication Date
EP3020600A1 EP3020600A1 (de) 2016-05-18
EP3020600B1 true EP3020600B1 (de) 2019-05-29
EP3020600B8 EP3020600B8 (de) 2019-07-24

Family

ID=54478662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15193851.1A Not-in-force EP3020600B8 (de) 2014-11-13 2015-11-10 Fahrzeugsitz

Country Status (4)

Country Link
US (1) US9701228B2 (de)
EP (1) EP3020600B8 (de)
JP (1) JP6098616B2 (de)
CN (1) CN105599655A (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6102901B2 (ja) * 2014-12-19 2017-03-29 トヨタ自動車株式会社 車両用シート
US10052987B2 (en) * 2016-08-25 2018-08-21 Ts Tech Co., Ltd. Vehicle seat
JP2018144761A (ja) * 2017-03-09 2018-09-20 トヨタ紡織株式会社 乗物用シート、及びその製造方法
KR102633948B1 (ko) * 2018-11-09 2024-02-05 현대자동차주식회사 자동차용 시트백 및 이의 제조 방법
KR102598541B1 (ko) * 2018-11-19 2023-11-03 현대자동차주식회사 자동차용 시트의 사이드 익스텐션 장치
JP7103587B2 (ja) 2018-12-27 2022-07-20 日本発條株式会社 車両用シート
CN110524776B (zh) * 2019-08-30 2022-06-21 延锋国际座椅***有限公司 一种用于座椅发泡体的吊紧结构
JP7101206B2 (ja) * 2020-03-19 2022-07-14 テイ・エス テック株式会社 乗り物用シート

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US20130313885A1 (en) * 2012-05-28 2013-11-28 Toyota Boshoku Kabushiki Kaisha Vehicle seat

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Also Published As

Publication number Publication date
US9701228B2 (en) 2017-07-11
JP2016094072A (ja) 2016-05-26
EP3020600B8 (de) 2019-07-24
CN105599655A (zh) 2016-05-25
EP3020600A1 (de) 2016-05-18
US20160137108A1 (en) 2016-05-19
JP6098616B2 (ja) 2017-03-22

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